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SPSS MACROS FOR COMPUTING STANDARD ERRORS WITHOUT PLAUSIBLE VALUES

Pseudo-stratum

School R1 R2 R3 R4 R5 R6 R7 R8

1 1 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5

1 2 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5

2 3 1.5 0.5 1.5 0.5 1.5 0.5 1.5 0.5

2 4 0.5 1.5 0.5 1.5 0.5 1.5 0.5 1.5

3 5 1.5 1.5 0.5 0.5 1.5 1.5 0.5 0.5

3 6 0.5 0.5 1.5 1.5 0.5 0.5 1.5 1.5

4 7 1.5 0.5 0.5 1.5 1.5 0.5 0.5 1.5

4 8 0.5 1.5 1.5 0.5 0.5 1.5 1.5 0.5

5 9 1.5 1.5 1.5 1.5 0.5 0.5 0.5 0.5

5 10 0.5 0.5 0.5 0.5 1.5 1.5 1.5 1.5

• PISA Replication methods for multistage sample : Fays method

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Computation of Standard Errors

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• PISA2009 SAS student data file

Computation of Standard Errors

• Student Final Weight : W_FSTUWT

• 80 replicates : W_FSTR1 to W_FSTR80

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• How to weight the data in SPSS?

Computation of Standard Errors

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Computation of Standard Errors

• How to weight the data in SPSS?

• SPSS uses as denominator for estimating STD

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Computation of Standard Errors

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Computation of statistic for the 80 replicates …

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Computation of Standard Errors

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• Structure of SPSS macros for the computation of SE:– Selection of variables (DEP=)– Iteration of the SPSS procedure on the final

weight and 80 (default) replicates (NREP=)– Data files manipulation and computation of the

SE– Computation of limits if required– Selection of statistics (STAT=)

Computation of Standard Errors

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Computation of Standard Errors

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• Use of the limit criteria– Number of students– Number of schools– Number of variables of the BYVAR statement

for defining the population of reference

Computation of Standard Errors

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Computation of Standard Errors

StdDev and SE of HISEI by CNT and Gender

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Computation of Standard Errors

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• SPSS macros for:– Univariate statistics

• Means (MCR_SE_UNIV)• Percentages (MCR_SE_GrpPct)

– Multivariate statistics• Correlation (MCR_SE_COR)• Regression (MCR_SE_REG)

Computation of Standard Errors

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Computation of Standard Errors

Percentage of students by grade (ST01Q01) within Country and Gender categories

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Computation of Standard Errors

Percentage of students by grade (ST01Q01) within countries and Gender categories

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Computation of Standard Errors

Correlation between ESCS and MATHEFF by gender

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Computation of Standard Errors

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2

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Computation of Standard Errors

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